Dental vacuum pump



FIG. 1 is a perspective view of a dental vacuum pump showing my new design; and;

FIG. 2 is a front view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a dental vacuum pump, as shown and described. 